Literature DB >> 30608728

Measurement of the Electron Antineutrino Oscillation with 1958 Days of Operation at Daya Bay.

D Adey1, F P An2, A B Balantekin3, H R Band4, M Bishai5, S Blyth6,7, D Cao8, G F Cao1, J Cao1, Y L Chan9, J F Chang1, Y Chang7, H S Chen1, S M Chen10, Y Chen11, Y X Chen12, J Cheng13, Z K Cheng14, J J Cherwinka3, M C Chu9, A Chukanov15, J P Cummings16, F S Deng17, Y Y Ding1, M V Diwan5, M Dolgareva15, D A Dwyer18, W R Edwards18, M Gonchar15, G H Gong10, H Gong10, W Q Gu5, L Guo10, X H Guo19, Y H Guo20, Z Guo10, R W Hackenburg5, S Hans5, M He1, K M Heeger4, Y K Heng1, A Higuera21, Y B Hsiung6, B Z Hu6, J R Hu1, T Hu1, Z J Hu14, H X Huang22, X T Huang13, Y B Huang1, P Huber23, W Huo17, G Hussain10, D E Jaffe5, K L Jen24, X L Ji1, X P Ji5, R A Johnson25, D Jones26, L Kang27, S H Kettell5, L W Koerner21, S Kohn28, M Kramer18,28, T J Langford4, L Lebanowski10, J Lee18, J H C Lee29, R T Lei27, R Leitner30, J K C Leung29, C Li13, F Li1, H L Li13, Q J Li1, S Li27, S C Li23, S J Li14, W D Li1, X N Li1, X Q Li31, Y F Li1, Z B Li14, H Liang17, C J Lin18, G L Lin24, S Lin27, S K Lin21, Y-C Lin6, J J Ling14, J M Link23, L Littenberg5, B R Littlejohn32, J C Liu1, J L Liu33, Y Liu13, Y H Liu8, C W Loh8, C Lu34, H Q Lu1, J S Lu1, K B Luk18,28, X B Ma12, X Y Ma1, Y Q Ma1, Y Malyshkin35, C Marshall18, D A Martinez Caicedo32, K T McDonald34, R D McKeown36,37, I Mitchell21, L Mora Lepin35, J Napolitano26, D Naumov15, E Naumova15, J P Ochoa-Ricoux35, A Olshevskiy15, H-R Pan6, J Park23, S Patton18, V Pec30, J C Peng38, L Pinsky21, C S J Pun29, F Z Qi1, M Qi8, X Qian5, R M Qiu12, N Raper14, J Ren22, R Rosero5, B Roskovec35, X C Ruan22, H Steiner18,28, J L Sun39, W Tang5, D Taychenachev15, K Treskov15, W-H Tse9, C E Tull18, B Viren5, V Vorobel30, C H Wang7, J Wang14, M Wang13, N Y Wang19, R G Wang1, W Wang8, W Wang8, X Wang40, Y F Wang1, Z Wang10, Z Wang10, Z M Wang1, H Y Wei5, L H Wei1, L J Wen1, K Whisnant41, C G White32, T Wise4, H L H Wong18,28, S C F Wong14, E Worcester5, Q Wu13, W J Wu1, D M Xia42, Z Z Xing1, J L Xu1, T Xue10, C G Yang1, H Yang8, L Yang27, M S Yang1, M T Yang13, Y Z Yang14, M Ye1, M Yeh5, B L Young41, H Z Yu14, Z Y Yu1, B B Yue14, S Zeng1, L Zhan1, C Zhang5, C C Zhang1, F Y Zhang33, H H Zhang14, J W Zhang1, Q M Zhang20, R Zhang8, X F Zhang1, X T Zhang1, Y M Zhang10, Y M Zhang10, Y X Zhang39, Y Y Zhang33, Z J Zhang27, Z P Zhang17, Z Y Zhang1, J Zhao1, P Zheng27, L Zhou1, H L Zhuang1, J H Zou1.   

Abstract

We report a measurement of electron antineutrino oscillation from the Daya Bay Reactor Neutrino Experiment with nearly 4 million reactor ν[over ¯]_{e} inverse β decay candidates observed over 1958 days of data collection. The installation of a flash analog-to-digital converter readout system and a special calibration campaign using different source enclosures reduce uncertainties in the absolute energy calibration to less than 0.5% for visible energies larger than 2 MeV. The uncertainty in the cosmogenic ^{9}Li and ^{8}He background is reduced from 45% to 30% in the near detectors. A detailed investigation of the spent nuclear fuel history improves its uncertainty from 100% to 30%. Analysis of the relative ν[over ¯]_{e} rates and energy spectra among detectors yields sin^{2}2θ_{13}=0.0856±0.0029 and Δm_{32}^{2}=(2.471_{-0.070}^{+0.068})×10^{-3}  eV^{2} assuming the normal hierarchy, and Δm_{32}^{2}=-(2.575_{-0.070}^{+0.068})×10^{-3}  eV^{2} assuming the inverted hierarchy.

Entities:  

Year:  2018        PMID: 30608728     DOI: 10.1103/PhysRevLett.121.241805

Source DB:  PubMed          Journal:  Phys Rev Lett        ISSN: 0031-9007            Impact factor:   9.161


  2 in total

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Authors: 
Journal:  Nature       Date:  2020-04-15       Impact factor: 49.962

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Authors:  Anatael Cabrera; Yang Han; Michel Obolensky; Fabien Cavalier; João Coelho; Diana Navas-Nicolás; Hiroshi Nunokawa; Laurent Simard; Jianming Bian; Nitish Nayak; Juan Pedro Ochoa-Ricoux; Bedřich Roskovec; Pietro Chimenti; Stefano Dusini; Mathieu Bongrand; Rebin Karaparambil; Victor Lebrin; Benoit Viaud; Frederic Yermia; Lily Asquith; Thiago J C Bezerra; Jeff Hartnell; Pierre Lasorak; Jiajie Ling; Jiajun Liao; Hongzhao Yu
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  2 in total

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